Wheel-rim.



Patented Dec.l I6, |902.

w. FRIEDRICH.

WHEEL BIM. (Applimtion nlm my 2e, |1562.)

(No Model.)

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[dw/M nl: nouns Pneus cmguoourxmwAsH-:avos n c UNITED STATI-s PATENT'FFICE.

WILHELM FRIEDRICH, OF RIXDORF, GERMANY.

WHEEL-RIM.

SPECIFICATION forming part of Letters Patent No. 715,780, dated December16, 1902.

Application led May 26,1902. Serial No. 109,066. (No model.)

To all whom it may concern,.-

Be it known that I, WILHELM FRIEDRICH, manufacturer, a subject of theEmperor of Germany, residing at 231 I-Ierrmannstrasse, RiXdorf, nearBerlin, in the Empire of Germany, have invented certain new and usefulImprovements in Wheel-Rims, of which the followingis a specification.

At the present day it is the practice to manufacture wheels for cyclesand other vehicles with hollow or tubular rims formed from sheet metalwith a groove in the outer surface to receive the rubber tire. It is tothis class of rims that the present invention relates; but its chiefobject is to construct a rim in such a manner that the putting on andremoving of the tire will belgreatly facilitated. In order to accomplishthis obj ect,my rims are constructed of an outer and an inner ring, bothof conicalor tapering cross-section, and they are fastened together inthe manner hereinafter described.

In the accompanying drawings, Figure 1 is a view showing incross-section my rim in its preferred form. Fig. 2 is a partial sideview of the rim represented in Fig. l.

Of the two felly-rings aand b, of conical or tapering cross-section andarranged one above the other, the outer one, a, which carries thepneumatic tire, is provided With one or more levers c, the latter beinglaterally and movably arranged on said ring ct and preferably bent atright angles. Corresponding projections cZ are provided on the innerside and preferably on or near the edge of the inner felly-ring, whichprojections engage with the levers c on the ends of the latter, beingpressed against the hook-springs e, attached to the smaller or innerfelly-ring. On further pressing upon the levers c the springs e arepressed sidewise and the hooks thereof finally engage with the ends ofthe said levers, whereby the latter are kept in position.v

The said levers thus serve to connect the two felly-rings with oneanother; but in order to fit and keep them close upon one another theinner ring is iitted with a screw-bolt g, which on turning down thelevers o enters into a corresponding hole provided in the latter. Onscrewing down a thumb-screw h, fitted onto the screw bolt g, the leversc are firmly pressed against the inner telly-ring h,with the result thatboth rings a and b are joined together.

In order to exchange the pneumatic tire of the wheel, it is onlynecessary to loosen the said thumb-screw by hand and remove the samefrom the screw-bolt g. After bending back the hook-springs e the leversc are again free and the outer felly-rim, which carries the pneumatictire, may then be easily removed. For the purpose of again putting onthe pneumatic tire the felly-ring a is placed over the inner ring b andthe manipulation described above again repeated.

What I claim as my invention, and desire to secure by Letters Patent ofthe United States, is-

1. A wheel-rim consisting of an outer and an inner telly-ring of conicalcross-section, the outer ring being provided with one or more leversadapted t0 engage with corresponding radial projections arranged on theinner ring for the purpose of joining the two rings together.

2. A wheel-rim consisting of an outer and an inner ring of conicalsection, the outer ring being provided with one or more levers, whichlatter are bent at right angles and adapted to engage with correspondingradial projections arranged on the inner ring, as and for the purposeset forth.

3. In combination with a wheel-rim consisting of an outer and an innerring of conical cross-section and having one or more levers attached tothe outer ring, which are bent at right angles and adapted to engagewith corresponding radial projections arranged on the inner ring, aspring hook or hooks on the inner ring adapted to keep the levers inplace when the latter are turned down, as and for the purpose described.

4. In a wheel-rim consisting of an outer and an inner ring of conicalcross-section and having one or more levers attached to the outer riu g,which are bent at right angles and adapted to engage with correspondingradial prosolidly jections arranged on the inner ring, and having also aspring hook or hooks adapted to keep the levers in place, a screw-bolttted into the inner ring and adapted to enter a corresponding hole ofthe levers as soon as the latter are turned down, as and for the purposeset forth.

IOO

5. In combination with a wheel-rim consisting of an outer and an innerring of conical cross-section and having one or more levers attached tothe outer ring which are bent at right angles and adapted to engage Withcorresponding radial projections arranged on the inner ring and havingalso a spring hook or hooks on the' inner ring adapted to keep thelevers in position, and a screw-bolt fitted into the inner ring andadapted to enter a corresponding hole of the levers as soon as thelatter are turned down, a thumb-screw fitted onto the screw-bolt andadapted to be screwed down and thereby effect a solid joining of theouter and inner ring, substantially 15 as shown and described.

In testimony whereof I have signed my name to this specification vin thepresence of two subscribing Witnesses.

WILHELM FRIEDRICH.

Witnesses:

HENRY HASPER, WOLDEMAR HAUPT.

